The apparent pregnancy announcement comes less than a week before Williams reclaims the top spot in the women's tennis rankings, which she's set to do Monday, according to the Women's Tennis Association. It will mark her 317th week as the top female tennis player in the world.

Williams is coming off of a January victory at the Australian Open, where she beat her sister in the final. It was her record-setting 23rd Grand Slam title.

Williams Sisters Return to Compton

Venus and Serena Williams returned to Compton for the first time since their half-sister was killed in the city in 2003. Marin Austin reports for the NBC4 News at 6 on Saturday, Nov. 12, 2016.